Electromagnetically Induced Torque on a Large Ring in the Microwave Range

Émile, Olivier; Brousseau, Christian; Émile, Janine; Niemiec, Ronan; Madhjoubi, Kouroch; Thidé, Bo

doi:10.1103/physrevlett.112.053902

Cited by 33 publications

(40 citation statements)

References 33 publications

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“…21. The calculated spatial profiles are consistent with previous theoretical work on electric and magnetic resonances of nanoparticles of similar sizes and shapes (Enkrich et al, 2005;Sarychev et al, 2006). Critically, the intensity of the magnetic response is within an order of magnitude of the electric response, indicating that measurement of magnetic plasmon resonances should be experimentally accessible (Mohammadi et al, 2012).…”

Section: Plasmon Spectroscopysupporting

confidence: 77%

“…As in the case of optical vortices being used to trap and rotate objects from atoms to particles of micron size (Andersen et al, 2006;Barreiro and Tabosa, 2003;Emile et al, 2014;Franke-Arnold et al, 2008;He et al, 1995;Ru↵ner and Grier, 2012), the influence of an electron vortex beam has been shown to induce rotation in nanoparticles (Gnanavel et al, 2012;Verbeeck et al, 2013). Using the forked holographic mask technique to generate elec-tron vortex beams within a JEOL 2200FS double aberration corrected scanning transmission electron microscope operated at 200 keV, gold nanoparticles on carbon support were observed to rotate under the influence of the vortex beams (Gnanavel et al, 2012).…”

Section: Mechanical Transfer Of Orbital Angular Momentummentioning

confidence: 99%

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Electron vortices: Beams with orbital angular momentum

et al. 2017

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The recent prediction and subsequent creation of electron vortex beams in a number of laboratories occurred after almost 20 years had elapsed since the recognition of the physical significance and potential for applications of the orbital angular momentum carried by optical vortex beams. A rapid growth in interest in electron vortex beams followed, with swift theoretical and experimental developments. Much of the rapid progress can be attributed in part to the clear similarities between electron optics and photonics arising from the functional equivalence between the Helmholtz equations governing the free space propagation of optical beams and the time-independent Schrödinger equation governing freely propagating electron vortex beams. There are, however, key di↵erences in the properties of the two kinds of vortex beams. This review is concerned primarily with the electron type, with specific emphasis on the distinguishing vortex features: notably the spin, electric charge, current and magnetic moment, the spatial distribution as well as the associated electric and magnetic fields. The physical consequences and potential applications of such properties are pointed out and analysed, including nanoparticle manipulation and the mechanisms of orbital angular momentum transfer in the electron vortex interaction with matter.

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Section: Plasmon Spectroscopysupporting

confidence: 77%

Section: Mechanical Transfer Of Orbital Angular Momentummentioning

confidence: 99%

Electron vortices: Beams with orbital angular momentum

et al. 2017

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“…When the wave propagates both axially and azimuthally, it possesses an axial field momentum and an azimuthal orbital angular field momentum, k z + m/r. The latter can also exert a torque on matter [136]. In analogy to a rotating and spinning particle the field polarization produces a 'spin' angular momentum and the field rotation an 'orbital' angular momentum [137].…”

Section: Electromagnetic Waves With Angular Momentummentioning

confidence: 99%

Whistler waves with angular momentum in space and laboratory plasmas and their counterparts in free space

Stenzel

2016

Advances in Physics: X

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Electromagnetic waves with helical phase surfaces arise in different fields of physics such as space plasmas, laboratory plasmas, solid-state physics, atomic, molecular and optical sciences. Their common features are the wave orbital angular momentum associated with the circular wave propagation around the axis of wave propagation. In plasmas these waves are called helicons. When particles or waves change the field momentum they experience a pressure and a torque which can lead to useful applications. In plasmas electrons can damp or excite rotating whistlers, depending on the electron distribution function in velocity space. A magnetized plasma is an anisotropic medium in which electromagnetic waves propagate differently than in space. Phase and group velocities are different such that wave focusing and wave reflections are different from those in free space. Electrons experience Doppler shifts and cyclotron resonance which creates wave damping and growth. All media exhibit nonlinear effects which do not occur in free space. Common and different features of vortex waves in different fields will be reviewed. However, a comprehensive review of this vast field is not possible and further readings are referred to the cited literature. ARTICLE HISTORY

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“…Thus, several orthogonal channels are set up and channel capacity of optical communication may be greatly increased [1]. However, multiplexing twisted radio wave for wireless communication is still a new area [4]- [8]. Theoretical studies were summarized in [4]- [6].…”

Section: Introductionmentioning

confidence: 99%

A dual-channel wireless communication system by multiplexing twisted radio wave

Ōhashi

Kasai

2014

2014 44th European Microwave Conference

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In order to make full use of current wireless spectrum, we achieve a dual-channel wireless communication system by multiplexing twisted radio wave. In this system, a big challenge is antenna design to generate and combine twisted radio wave. Therefore, firstly, we propose a stacked antenna to achieve this. Secondly, we set up the dual-channel wireless communication system at 8.3 GHz by adopting the antenna. To our knowledge, this is the first time that a wireless communication system multiplexes two modes of twisted radio wave. The experimental results show that the system doubles the spectrum efficiency and reaches a data speed of 1 Gbps with low bit error rate (<10 -7 ).

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Electromagnetically Induced Torque on a Large Ring in the Microwave Range

Cited by 33 publications

References 33 publications

Electron vortices: Beams with orbital angular momentum

Electron vortices: Beams with orbital angular momentum

Whistler waves with angular momentum in space and laboratory plasmas and their counterparts in free space

A dual-channel wireless communication system by multiplexing twisted radio wave

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